Recently, I posted a Twitter thread about my visit to Apples secret buying iphone 4 online durability testing labs, and the response was overwhelming. Many people were curious about the processes behind making iPhones so durable. Today, Im sharing exclusive footage and insights from my visit.
### Water Resistance Testing
The first test I observed was for water resistance. It's something we often take for granted, but achieving IP68 certification, the highest standard for water and dust resistance, requires rigorous testing. IP, which stands for Ingress Protection, uses two numbers: the first for solids and the second for liquids. Each number indicates the level of protection.
Early iPhones, up to the iPhone 6s, lacked any water resistance rating. However, starting with the iPhone 7, Apple introduced IP67 water resistance, allowing the phone to withstand submersion up to 1 meter for 30 minutes. Now, with IP68, iPhones can endure even greater depths for longer periods.
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